[LS1] engine accelerates slightly when revs hit 1200rpm going down gears

[D-mac]

Hey all, as title stated.
Just recently had my car Maffless tuned by Oztrack Tuning and now experiencing some unusual acceleration when im going down my gears when the revs get to 1200rpm. The acceleration is only for a quick second and makes the car jolt forward the goes back to de-accelerating, happens in all the gears but if i speed up in a gear (e.g 4th) then throttle off it wont do it (still in 4th) but if i stuck it in 3rd after and allowed the revs to go below 1200rpm the engine will try and bump up revs/jolt forward then revs will continue to go down after. Ive emailed Steve from Oztrack and he seems to think it could be a tps fault. Hopefully ive explained this well enough for all to understand. Any suggestions would be great. Im going to put my old pcm in and see if it still does it because its only started doing it after the tune.

 

[RiCeY]

Take it back, say TPS was fine prior to tune.

If it started happening after the tune, its the tune.

 

[Munz]

Pay for a **** tune, you get a **** tune........simple

 

[D-mac]

Pay for a **** tune, you get a **** tune........simple

its the only issue ive had with it. Car now runs at 8.1lts per 100km and runs and goes a hell of a lot better.

 

[Tones]

Learn how to drive....

 

[D-mac]

Learn how to drive....

That's enough of ur smack talk Tone, learn how to park in big w around the pillars ayeee.

Sent from my HTC One XL using Tapatalk 2

 

[manuelmanuel]

Hey mate your better off posting your question on the EFI live forum, its free to join anyways.
They might have an idea about what your problem is.
Is that 8.1lt in highway cruising, how much is it in the city?

 

[D-mac]

I drove 78km and averaged 8.1 with air con on, the next day drove half peak Adelaide traffic with air con on averaged 9.5 and yes I reset the trip. Pretty happy with that. I send my tune back to oztrack and received it back b wk later and problem in now gone. Idles down like normal. Cheers for everyone's feedback except for Tones...... Cock!

Sent from my HTC One XL using Tapatalk 2

 

[Tones]

Good.
Where's the balance?